摘要
以表面增强拉曼效应的金面作为基底,用共焦显微拉曼光谱仪对C60在紫外光辐射下拉曼光谱的变化进行了原位的跟踪考查。结果表明,在紫外辐射下,C60发生了聚合,失去了分子所固有的球形对称结构;但聚合产物的笼状结构形式并无太大的变化,只是结构的共轭体系增大,整体的对称性降低。
Raman spectroscopy was applied to monitor the coalescence process of C60molecules induced by UV radiationThe C60 moleculesm,adsorbed on the gold surface,was processed to enhance the Raman scattering effectAs shown by the recorded spectra,after the coalescence reaction,the bands corresponding to the high symmetry Ag mode of the C60 molecules either disappeared or becamevery weak,but the bands of other vibrational mods just broadened and shifted to lower wavenumbersThe spectroscopy result suggests that the products of coalescence still keep the cage structure of the pristine C60 molecules
基金
国家自然科学基金
国家教委基金